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GAMT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
HAST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
HAST is not used on this date
This converter keeps HAST at UTC−10. Adak uses HDT (UTC−9) on this date. Open the HDT converter.

Quick answers

Selected conversion

3:00 am03:00 GAMT (UTC-9), Oct 22, 2026 = 2:00 am02:00 HAST (UTC-10), Oct 22, 2026

GAMT is 1 hour ahead of HAST.

GAMT and HAST examples

These examples always use GAMT (UTC-9) and HAST (UTC-10). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

GAMT is 1 hour ahead of HAST.

How the time difference changes

GAMT is 1 hour ahead of HAST year-round.

Working hours of 9:00 am to 6:00 pm in GAMT correspond to 8:00 am to 5:00 pm in HAST.Working hours of 09:00 to 18:00 in GAMT correspond to 08:00 to 17:00 in HAST.

Compare GAMT time with HAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Gambier Time is 1 hour ahead of Hawaii-Aleutian Standard Time.
3:00 am03:00 in GAMT is 2:00 am02:00 in HAST

GAMT to HAST call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in GAMT which corresponds to 9am-5pm09:00-17:00 in HAST

3:00 am03:00 Gambier Time (GAMT). Offset UTC -9:00 hours
2:00 am02:00 Hawaii-Aleutian Standard Time (HAST). Offset UTC -10:00 hours

3:00 am03:00 GAMT / 2:00 am02:00 HAST

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Hourly time comparison
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Gambier Time

Offset: GAMT is 9 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: French Polynesia

Principal Cities: The largest city in the GAMT time zone is Rikitea in French Polynesia, with about 1,103 people.

Daylight Saving: Clocks in Gambier Time (GAMT) do not change for daylight saving time, so GAMT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

GAMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -09 - basic short
  • -0900 - basic
  • -09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0900 - sign character (-) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Victor - Military abbreviation for GAMT
  • V - short form of 'Victor'
Time zones with the GMT -9 offset:
  • AKST - Alaska Standard Time
  • AHDT - Alaska-Hawaii Daylight Time
  • HADT - Hawaii-Aleutian Daylight Time
  • GAMT - Gambier Time
  • HDT - Hawaii Daylight Time
  • V - Victor Time Zone

Hawaii-Aleutian Standard Time

Offset: HAST is 10 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: United States

Map of the areas on Hawaii-Aleutian Standard Time (HAST)
HAST part of the year

Today the shaded areas are on UTC−9 (HDT).

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Hawaii-Aleutian Daylight Time (HADT).

123456789101112End: Hawaii-Aleutian Standard Time (HAST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Hawaii-Aleutian Standard Time (HAST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

HAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -10 - basic short
  • -1000 - basic
  • -10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -1000 - sign character (-) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Whiskey - Military abbreviation for HAST
  • W - short form of 'Whiskey'
Time zones with the GMT -10 offset:
  • HAST - Hawaii-Aleutian Standard Time
  • CKT - Cook Island Time
  • HST - Hawaii Standard Time
  • TAHT - Tahiti Time
  • W - Whiskey Time Zone